I don't think I have any better suggestions than the several very good ones offered above. I just wanted to say it is a shame that people can be so thoughtless and inconsiderate. Some people offend without meaning to. Some truly are just wanting to stick their nose where it doesn't belong. You might try and discern which group the persons who bother you for info are in. Then you can attempt to gently redirect the well-meaning ones to a different topic of conversation. The others you can be more dismissive of. They don't deserve more than a brusque reply.